

In the case of I Am Sam, Nokia not wanting their brand associated with a system which fails conspicuously in a high-profile film is understandable from their point of view.

Harley takes a public posture that they will attempt to protect their sound (as part of their brand). (Meaning there is no recorded case-law for sonic trademark being enforcable or not.) However, they still publicly claim ownership of the sound as a trademark. If they won, consumers would have to buy a harley to get that signature rumbly slightly acyclic sound which strikes fear and envy into the hearts of suburban people worldwide.

They were attempting to trademark the sonic signature produced by a certain style of engine - and thusly force honda and other competitors to change their engine designs. I followed the Harley trademark case with interest as it was groundbreaking. With regards to the sonics of products as trademarks - there's not a lot of clarity.
